EP0672459A1 - Centrifugeuse filtrante - Google Patents

Centrifugeuse filtrante Download PDF

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Publication number
EP0672459A1
EP0672459A1 EP95810103A EP95810103A EP0672459A1 EP 0672459 A1 EP0672459 A1 EP 0672459A1 EP 95810103 A EP95810103 A EP 95810103A EP 95810103 A EP95810103 A EP 95810103A EP 0672459 A1 EP0672459 A1 EP 0672459A1
Authority
EP
European Patent Office
Prior art keywords
filter
cage
basket
lifting device
centrifuge according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95810103A
Other languages
German (de)
English (en)
Other versions
EP0672459B1 (fr
Inventor
Eduard Weber
René Rohr
Jürg Suter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ferrum AG
Original Assignee
Ferrum AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ferrum AG filed Critical Ferrum AG
Publication of EP0672459A1 publication Critical patent/EP0672459A1/fr
Application granted granted Critical
Publication of EP0672459B1 publication Critical patent/EP0672459B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
    • B04B3/02—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering discharging solid particles from the bowl by means coaxial with the bowl axis and moving to and fro, i.e. push-type centrifuges

Definitions

  • the present invention relates to a filter centrifuge according to the preamble of patent claim 1.
  • Centrifuges with rotating drums or barrels are often used to separate particles from liquids, in which the filtrate formed from the solid particles remains on a filter cloth or filter bag.
  • a mechanism is used which mechanically wipes the drum wall.
  • An important advantage of the filter centrifuge according to the invention is that, in contrast to the known mechanical scraper blades, which are unsuitable for removing residual layers, for example up to 4 or 5 mm, in particular at the edges, they enable the filter cloth to be completely emptied.
  • Another advantage of the filter centrifuge according to the invention is that, in contrast to the emptying scraper knives which destroy the crystals which have been filtered out, they are excellently suitable for gently removing the crystals.
  • the machine body 2 comprises a bearing housing 8 with fixed ribs 9 (FIG. 4).
  • a lower bearing 10 and an upper bearing 11 for the drive shaft 12 of the cage 5 are arranged in the bearing housing 8.
  • the upper part of the drive shaft 12 is connected to the shaft head 13 of a cage hub 14, the lower part of which is connected to ribs 15 formed in the lower part of the cage neck 7.
  • the drum 6 of the cage 5 is approximately C-shaped in cross section and comprises a middle vertical drum shell 16, a lower approximately radial drum base 17 and an upper approximately radial annular drum cover wall 18.
  • the drum base 17 is a connection between the cage neck 7 and the drum shell 16 designed.
  • the running cage 5, which thus comprises the elements 18, 16, 17, 7 (15), 14 (13) and 12, is therefore rotatably supported in the filter centrifuge via the bearings 10 and 11.
  • the vertical part of the cage neck 7 and the vertical lower part of the cage hub 14 define an annular cylindrical displacement 21, into which a filter clamping device or lifting device 22 can partially be moved, which has a vertical piston 23 and an outer fastening device connected to it via radial ribs 25 24 comprises, which can be a filter mounting ring, for example.
  • the piston 23 is actuated electrically or hydraulically in order to be able to move it in the vertical direction.
  • the drive shaft 12 can, for example, be connected to corresponding fluidic connections 27 via a swivel rotary head 26.
  • the rotary head 26 comprises a sealing head for two separate fluidic circuits 28 (only indicated in FIG. 1) for the transmission of fluid pressure from the stationary machine body 2 to the rotating drive shaft 12. The pressure is applied to the piston by the drive shaft 12 and by the cage hub 14 23 led.
  • the upper part of the filter centrifuge can be designed with an oblique filling plate 29 or with a central filling plate or with a filling tube.
  • FIG. 2 shows that the lifting device 22 can have, for example, five ribs 25, which are congruent with the five ribs 15 of the cage 5. Five through openings 30 are present between these ribs.
  • FIGS. 3 and 4 show that the outer part of the collecting chamber 1 is connected to the bearing housing 8 by means of three ribs 9, and that there are through openings 30 'between these three ribs 9 in order to enable communication with the so-called product space. Also are two through-channels 31, 31 ', insulated from the product space, in which the drive belts for the movement of the drive shaft 12 are accommodated.
  • the filter centrifuge according to FIGS. 1 to 6 works as follows:
  • the drum jacket 16 is provided, as usual, with holes, not shown in the drawing, so that the liquid can flow out by centrifugal force when the basket 5 rotates.
  • the supplied liquid with solid particles in suspension is laterally sprayed laterally by centrifugal force from an optionally rotating ejector in the collecting chamber 1. Since the drum 6 also rotates, the liquid passes through the pores or meshes of the filter cloth 20 or 20 'and through the holes in the drum jacket 16 into the collecting chamber 1, from which it can escape through the discharge pipe 43 (FIG. 4). Due to the centrifugal force of the rotating drum 6, the topping or cake formed by the solid particles is formed on the inner side of the filter cloth.
  • the filter element, filter cloth or the like is held at the top by the fastening device 19 (FIG. 1) and at the bottom by the filter fastening ring 24.
  • the filter mounting ring 24 is located in the upper region of the neck neck 7, as in FIGS. 1 and 5.
  • the basket 5 can be filled in the three ways mentioned above, and Figure 5 shows the position of the cake 32 when the drum 6 is full.
  • the basket 5 is braked to the emptying speed.
  • the lifting device 22 is then acted upon, for example, with compressed gas or electrically and thereby brought into the lower end position, so that the filter attachment ring 24 pulls the lower edge of the filter element 20 downward, which is forced into a cone shape according to FIG. 6.
  • the filter element is fixed at the bottom, for example in the upper region of the barrel neck 7, by a filter fastening device 33.
  • the filter element or filter cloth which in this case is also cylindrical at least in a central region so that it can rest against the inside of the running cage 5, is fastened at the top with the aid of a fastening device 34 to a cover device 35, which covers the inner opening of an annular drum cover wall 18 'covers.
  • the collecting chamber is closed with a cover 4 ', which has a central tubular holder 36 for a lifting body 37, which comprises a lifting platform 38 and a longitudinal guide 39, on which a guide sleeve 40 for a filling tube 41 is rotatably mounted.
  • the holder 36, the longitudinal guide 39, the guide sleeve 40 and the filling tube 41 are arranged coaxially with little play, such that the guide sleeve 40, which is connected at the bottom to the lid device 35, can rotate with it and therefore also with the running basket 5, even if parts 36, 39 and 41 are at rest.
  • two axial bearings are provided in the lower and in the upper area of these parts.
  • the platform 38 is movably connected to the holder 36 or to the cover 4 ′ via a mechanical, electrical, pneumatic or hydraulic mechanism 42 (FIG. 8), such that the cover 35 can perform a vertical lifting movement around the filter cloth 20 'upwards (Fig. 8).
  • the mode of operation of the filter centrifuge according to FIGS. 7 and 8 is similar to the embodiment according to FIGS. 5 and 6 with the difference that the filter element is stretched upwards.
  • the filter cloth 20, 20 ' is preferably non-positively or detachably connected to the filter fastening ring 24 or 33 and to the fastening device 19 or 34 (FIG. 7). Since the inside diameter of the drum jacket 16 (FIG. 1) is larger than the outside diameter of the barrel neck 7, a plurality of elongate, or at least approximation, can be in an at least approximately cylindrical filter cloth 20 or 20 ' vertically directed, form circumferentially distributed folds. For this purpose, the filter cloth is designed to be relatively flexible, so that it can be pressed tightly against the inside of the drum jacket 16 by the centrifugal force - more or less because of the folds.
  • the height of the collecting chamber 1 is therefore greater than the height of the drum jacket 16 in order to separate the ring 24 or 34 from the drum edge and the ring 24 or 34 within the collecting chamber 1 with the aid of the lifting device 22 or 42 to move so far down or up that the filter cloth is fully stretched.
  • the filter cloth 20 or 20 'must be so flexible and dimensioned that, in spite of its actual funnel shape, which is preferably assumed by the folds, it can adapt well to the inner wall of the drum jacket 16.
  • the lid 4, 4 ' can be opened and then laterally shifted and / or pivoted in order to enable the entire filter centrifuge to be opened.
  • the collecting chamber 1 can be provided with a further opening in order to create a vacuum, so that the filtration can be accelerated.
  • the nitrogen inlet can be closed or omitted.
  • Such openings can of course be provided with valves.
  • the collecting chamber 1 and the running basket 5, which can be made of stainless steel in various qualities according to the prior art, are preferably internally protected with a plastic coating, for example made of Teflon.
  • a support net can be present between the filter cloth 20 or 20 'and the drum jacket 6.
  • the lower mouth of the storage device can be closed with a cover, not shown in the figures.
  • the filter cloth can also be emptied by shaking the clamping ring with the aid of the lifting device 22 or 42.
  • filter cloths made of polypropylene or Teflon with a thickness of, for example, 1 mm and a mesh size of 5 to 100 ⁇ m can preferably be used for filter centrifuges of this type.
  • the bearing of the cage can be arranged on the outside between the machine body and the cage neck, which in this case has a central opening, the diameter of which is smaller than the inside diameter of the ball bearings can be used for storage of the cage, for example.
  • Such storage can consist, for example, of an upper ball bearing and a lower angular bearing.
  • the cage thus rotatably arranged about a vertical axis, the neck of which is thus designed as a hollow drive shaft, communicates via the central opening of the cage neck with a lower emptying space for the separated solid particles.
  • part of the lifting device can be mounted on the outside in a stationary manner, so that it can also be actuated purely mechanically, as in the example according to FIG.
  • the runner hub 14 can extend from the runner neck 7 to a relatively high point in the inner region of the runner basket.

Landscapes

  • Centrifugal Separators (AREA)
EP95810103A 1994-03-14 1995-02-17 Centrifugeuse filtrante Expired - Lifetime EP0672459B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH740/94 1994-03-14
CH00740/94A CH688988A5 (de) 1994-03-14 1994-03-14 Filterzentrifuge.

Publications (2)

Publication Number Publication Date
EP0672459A1 true EP0672459A1 (fr) 1995-09-20
EP0672459B1 EP0672459B1 (fr) 1999-05-26

Family

ID=4194107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95810103A Expired - Lifetime EP0672459B1 (fr) 1994-03-14 1995-02-17 Centrifugeuse filtrante

Country Status (5)

Country Link
US (1) US5567321A (fr)
EP (1) EP0672459B1 (fr)
JP (1) JP3383115B2 (fr)
CH (1) CH688988A5 (fr)
DE (1) DE59505993D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116351578A (zh) * 2023-05-06 2023-06-30 淄博浩一环保科技有限公司 一种拉袋式下卸料离心脱水设备

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MXPA01001445A (es) 1998-08-11 2002-11-29 Large Scale Biology Corp Metodo para recuperar proteinas a partir del fluido intersticial de tejidos de plantas.
US6981995B2 (en) * 2001-05-25 2006-01-03 Lombana Jorge L Separator for fluids and solids
US7175771B2 (en) * 2003-12-19 2007-02-13 Honeywell International, Inc. Multi-stage centrifugal debris trap
US20070278146A1 (en) * 2006-05-31 2007-12-06 Cook Melvin W Centrifugal Fluid Filtration Devices, Systems and Methods
CN102698886A (zh) * 2012-05-18 2012-10-03 江苏赛德力制药机械制造有限公司 一种上部拉袋下卸料离心机
CN102698887B (zh) * 2012-05-18 2014-04-16 江苏赛德力制药机械制造有限公司 一种上部拉袋卸料装置
KR20160082508A (ko) * 2013-10-31 2016-07-08 네퓨레 코포레이션 스트레이너기의 운전 방법
CN103861744B (zh) * 2014-04-03 2016-04-20 合肥通用机械研究院 一种滤袋上拉式往复振荡卸料型离心机
CN106269307B (zh) * 2016-08-24 2019-02-01 张家港市丁氏机械有限公司 自卸料式转鼓筒和离心机
CN109499786B (zh) * 2018-12-17 2023-10-03 张家港市永达机械制造有限公司 上悬式自动拉袋离心机的主轴保护结构
KR102504657B1 (ko) * 2019-11-18 2023-02-27 주식회사 엘지화학 가압 원심 탈수기

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2706733A1 (de) * 1977-02-17 1978-08-24 Fluormatic Maschinenbau Gmbh Schleudervorrichtung, insbesondere zur austrocknung von noch fliess- oder tropffaehigem schlamm
JPS5665646A (en) * 1979-11-02 1981-06-03 Takashi Mukai Filter-separation mechanism
US4894171A (en) * 1988-02-29 1990-01-16 Fermenta Plant Protection Company Method for removing salts from herbicide solutions

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5370791A (en) * 1991-08-22 1994-12-06 G A Industries, Inc. Backwashable self-cleaning strainer
JP3002089U (ja) 1994-03-17 1994-09-13 タナベウィルテック株式会社 竪バスケット底部排出型遠心分離機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2706733A1 (de) * 1977-02-17 1978-08-24 Fluormatic Maschinenbau Gmbh Schleudervorrichtung, insbesondere zur austrocknung von noch fliess- oder tropffaehigem schlamm
JPS5665646A (en) * 1979-11-02 1981-06-03 Takashi Mukai Filter-separation mechanism
US4894171A (en) * 1988-02-29 1990-01-16 Fermenta Plant Protection Company Method for removing salts from herbicide solutions

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 5, no. 132 (C - 68)<804> 22 August 1981 (1981-08-22) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116351578A (zh) * 2023-05-06 2023-06-30 淄博浩一环保科技有限公司 一种拉袋式下卸料离心脱水设备
CN116351578B (zh) * 2023-05-06 2023-09-08 淄博浩一环保科技有限公司 一种拉袋式下卸料离心脱水设备

Also Published As

Publication number Publication date
JP3383115B2 (ja) 2003-03-04
EP0672459B1 (fr) 1999-05-26
US5567321A (en) 1996-10-22
JPH07289945A (ja) 1995-11-07
CH688988A5 (de) 1998-07-15
DE59505993D1 (de) 1999-07-01

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